It's not clear to me that it's a stupid question at all, but rather raises the issue of versions of linux.sure, arch is cool, but can it be considered the fast version of LFS? Stupid question, i know.
But, LFS is its own thing. It's more like a recipe for making a Linux-based OS
Does anybody realize how much times and effort is put into that?
But keeping it updated and patched... that's a whole 'nother game.